Cast
Gene EvansSteve Karnes
André MorellProf. James Bickford
Leigh MadisonJean Trevethan
John TurnerJohn
Alastair HunterDr. C. A. Morris, the village doctor
Lloyd LambleSenior Admiral, at the Admiralty
Jack MacGowranDr. Sampson, the paleontologist
Maurice KaufmannMini Submarine Officer
Henri VidonTom Trevethan
Patrick JordanPhoto Lab Aide
Howard LangNaval Commader, at the "Valkyrie" wreck (uncredited)
Leonard SachsDialogue Scientist at Conference (bit)- Ernest BlythScientist at Conference (uncredited)
- Neal ArdenTV Newscaster (uncredited)
- Paul BeradiMan Listening to Car Radio (uncredited)
